$TTL 300
@ IN SOA ns root (
- 2020020701 ; Serial
+ 2020040701 ; Serial
4h ; slave refresh
15m ; slave retry time in case of a problem
4w ; slave expiration time
masada IN A 18.18.208.15
olinda IN A 18.18.208.12
novgorod IN CNAME novgorod.mit.edu.
-soviet-russia IN A 76.119.235.30
+; external IP for Soviet Russia
+soviet-russia IN A 73.219.64.71
tikal IN A 192.168.1.27